NVFM250-N02-08 SMC Corporation, NVFM250-N02-08 Datasheet - Page 4

• Manufacturer Part Number: NVFM250-N02-08
• Description: Valve, 5 port, manual actuator - toggle lever, 1/4 in. NPT, gas valve
• Manufacturer: SMC Corporation

Specifications of NVFM250-N02-08

• Actuator: Manual
• Brand/series: 200 Series
• Size, Port: 1⁄4 in. NPT

2. Conditions for mechanical operation
Avoid abrupt angles on limit switch actuator.
Cam and Dog Material
3. Never perform additional machining such as enlarging the
4. Operate all manual valves such as the push pin types, the
5-6-6
Series
Be sure to read before handling. Refer to pages 5-12-2 to 6 for Safety lnstructions and Solenoid Valve Precautions.
• Cam and dog angle and maximum speed
body mounting holes.
As doing so could lead to abnormal conditions such as air leakage.
selector types, and the flip toggle types with your finger.
If a hammer or other tools are used, or it is operated mechanically
through the use of a cylinder or the like, damage could result.
Above 45°
VM1000
VM100
VM200
VM400
VZM500
VZM400
VFM300
VFM200
VM800
(Bad)
Warning
Select the angle and the maximum speed of the operating
cam and the dog of the mechanism from within the
selection range given in the table below.
If they are operated beyond the selection range, the cam and the
dog could apply impact shocks to the actuator, leading to damage.
Series
Roller material
Polyacetal
Steel
(Bad)
VM
Max. travel
Roller lever
One way roller lever
Roller lever
One way roller lever
Straight plunger
Roller plunger
Cross roller plunger
Roller lever
One way roller lever
Straight plunger
Roller plunger
Roller lever
Adjustable roller lever
Adjustable rod lever
Actuator
Plunger material
Abrupt angle
Mounting
Steel, Resin
(Good)
Steel
Below 45°
switch actuator
Angle limit
Max. travel
30°
45°
30°
45°
30°
45°
30°
45°
30°
30°
30°
45°
30°
45°
30°
30°
45°
30°
45°
—
—
—
Plunger surface finish
(Good)
switch actuator (m/s)
(Good)
Max. speed limit
Precautions
0.7
0.3
0.7
0.3
0.7
0.3
0.7
0.3
0.2
0.3
0.3
1.5
0.7
0.7
0.3
0.4
0.7
0.5
0.2
0.2
0.1
0.2
External stop
prevent over travel
Below 45°
Mushroom
button
1. Do not operate it in an area in which fluids such as oil,
1. Perform inspections on a regular basis as necessary,
Replace the button in the following manner to change color of the button.
1. Push button (Flush type)
2. Push button (Mushroom and extended types)
Mounting
Removal
coolant, or water splash on it or dust comes in contact with it.
Because it does not have a waterproof or dustproof
construction, fluids or dust could enter the valve, leading to
malfunction. Therefore, take measures such as providing a
protective cover to prevent direct exposure.
such as at the beginning of an operation, to make sure
that the mechanical valve operates properly.
Failure to observe this precaution could lead to unsafe
operation, such as unintended operation or malfunction.
• Installation ···· Of the four colors, red, green, black, and yel-
• Removal ···· Remove the fastening ring and insert the tip of a
At the time of shipment, only 1 button of the color that you
specified is attached to the body.
Recessed portion
Caution
low, select and align the protruding portion of the button with
the recessed portion of the body and push in.
small flat screwdriver into the groove of the button to pry it
up.
Warning
Recessed portion
Protrusion
Align the protruding portion of
the button with the recessed
portion of the body and push
in. (Use the mark on the
button as a reference to align
the protruding part.)
Placing your finger under the
collar of the button on the
side of the mark, tilt it
upward.
How to Change the Buttons
Groove
Mushroom type
Protrusion
Environments
Maintenance
Mark
Groove
Align the protruding portion of
the button with the recessed
portion of the body and push
in.
Remove the fastening ring
and insert the tip of a small
flat
groove of the button to pry it
up.
screwdriver
Fastening ring
Extended type
Flat button
Flat head
button
into
Protrusion
the